Ping Federate - Unusual mail domain
Id | dc79de7d-2590-4852-95fb-f8e02b34f4da |
Rulename | Ping Federate - Unusual mail domain. |
Description | Detects unusual mail domain in authentication requests. |
Severity | Medium |
Tactics | InitialAccess |
Techniques | T1078 |
Required data connectors | CefAma |
Kind | Scheduled |
Query frequency | 1h |
Query period | 14d |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateUnusualMailDomain.yaml |
Version | 1.0.3 |
Arm template | dc79de7d-2590-4852-95fb-f8e02b34f4da.json |
let known_domains =
PingFederateEvent
| where TimeGenerated between (ago(14d) .. (1d))
| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)
| extend m_domain = extract(@'@(.*)', 1, email)
| where isnotempty(m_domain)
| summarize makeset(m_domain);
PingFederateEvent
| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)
| extend m_domain = extract(@'@(.*)', 1, email)
| where isnotempty(m_domain)
| where m_domain !in (known_domains)
| extend AccountCustomEntity = DstUserName
| extend IpCustomEntity = SrcIpAddr
id: dc79de7d-2590-4852-95fb-f8e02b34f4da
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateUnusualMailDomain.yaml
requiredDataConnectors:
- dataTypes:
- CommonSecurityLog
connectorId: CefAma
description: |
'Detects unusual mail domain in authentication requests.'
severity: Medium
queryPeriod: 14d
kind: Scheduled
tactics:
- InitialAccess
queryFrequency: 1h
query: |
let known_domains =
PingFederateEvent
| where TimeGenerated between (ago(14d) .. (1d))
| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)
| extend m_domain = extract(@'@(.*)', 1, email)
| where isnotempty(m_domain)
| summarize makeset(m_domain);
PingFederateEvent
| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)
| extend m_domain = extract(@'@(.*)', 1, email)
| where isnotempty(m_domain)
| where m_domain !in (known_domains)
| extend AccountCustomEntity = DstUserName
| extend IpCustomEntity = SrcIpAddr
version: 1.0.3
triggerThreshold: 0
name: Ping Federate - Unusual mail domain.
entityMappings:
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: Name
- entityType: IP
fieldMappings:
- columnName: IpCustomEntity
identifier: Address
status: Available
relevantTechniques:
- T1078
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/dc79de7d-2590-4852-95fb-f8e02b34f4da')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/dc79de7d-2590-4852-95fb-f8e02b34f4da')]",
"properties": {
"alertRuleTemplateName": "dc79de7d-2590-4852-95fb-f8e02b34f4da",
"customDetails": null,
"description": "'Detects unusual mail domain in authentication requests.'\n",
"displayName": "Ping Federate - Unusual mail domain.",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountCustomEntity",
"identifier": "Name"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IpCustomEntity",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateUnusualMailDomain.yaml",
"query": "let known_domains = \nPingFederateEvent\n| where TimeGenerated between (ago(14d) .. (1d))\n| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)\n| extend m_domain = extract(@'@(.*)', 1, email)\n| where isnotempty(m_domain)\n| summarize makeset(m_domain);\nPingFederateEvent\n| extend email = extract(@'email=(.*?),.*', 1, AdditionalExtensions)\n| extend m_domain = extract(@'@(.*)', 1, email)\n| where isnotempty(m_domain)\n| where m_domain !in (known_domains)\n| extend AccountCustomEntity = DstUserName\n| extend IpCustomEntity = SrcIpAddr\n",
"queryFrequency": "PT1H",
"queryPeriod": "P14D",
"severity": "Medium",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": [
"T1078"
],
"templateVersion": "1.0.3",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}